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Alloy X

Nickel-chromium-iron-molybdenum grade, Alloy X offers outstanding strength and corrosion resistance at temperature up to 1093°C

A solid solution strengthening grade, Alloy X has good strength and corrosion resistance in reducing carburising atmospheres.


Product form Size range from Size range to
Alloy X round bar 6.35 mm 165.1 mm
Alloy X sheet & plate 0.381 mm 76.2 mm
Alloy X welding wire 0.5 mm 2.36 mm
Alloy X coil 1.6 mm 3.2 mm

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    Welding Consumables

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    Sheet & Plate

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    Round Bar

Chemical Analysis

% Cr Mo Co W Al Ti B C Fe Mn Si P S Cu Ni
Min 20.5 8 0.5 0.2 - - - 0.05 17 - - - - - -
Max 23 10 2.5 1 0.5 0.15 0.01 0.15 20 1 1 0.04 0.03 0.5 Balance


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Perfect for applications in the Power Generation industry

Alloy X can be used in a variety of applications including:

  • Combustion liners
  • Turbine exhaust components
  • Aircraft cabin heaters
  • Transition Ducts
  • Industrial furnaces

About Alloy X

Alloy X has excellent resistance to reducing and carburizing atmospheres, making it suitable for furnace components. Due to its high molybdenum content, Alloy X may be subject to catastrophic oxidation at 1204°C.

The alloy has good high temperature strength coupled with oxidation resistance up to 1093°C.

This Alloy is readily weldable using matching filler wires. After severe forming, fabrications may be annealed at 1177°C, 15 minutes per 1/8″ of thickness, rapid air cool.

To learn more about Alloy X get in touch using our contact form, or fill in our online quote form and we’ll get back to you!


Melting range:


UNS Number:
Werkstoff Number:
ASTM B435, B572, AMS 5536, 5754, 5798
Download the Alloy X Data Sheet Download

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